Researchers have developed a scoring system based on genetic markers to predict an individual's inborn risk for obesity. The score accurately predicted BMI and obesity in over 300,000 individuals, with those in the top 10% being 29 pounds heavier on average and 25 times more likely to develop severe obesity.
Rhythmic food intake drives liver gene expression independently of the molecular clock, regulating metabolic pathways and potentially leading to health issues like aging and obesity. The study's findings have implications for understanding circadian biology and the impact of timing on health.
Researchers found that bacteria can recognize themselves using phages, which helps them repel competitors and gain a fitness advantage.
Scientists found that NIPSNAP proteins function as 'eat me' signals on damaged mitochondria, recruiting cellular machinery for mitophagy. In a zebrafish model, animals lacking NIPSNAP1 protein died within five days due to impaired mitochondrial clearance, highlighting its importance in maintaining dopaminergic neurons.
A new study of ancient DNA fragments in modern Papuans and Islanders suggests two distinct Denisovan lineages separated for hundreds of thousands of years, one potentially a new archaic hominin species. The findings highlight the importance of considering underrepresented regions in genome data to improve scientific interpretations.
Researchers explore how humans perceive robot responsibility and argue that key capacities, such as autonomy and appearance, can influence moral judgments. This understanding is crucial for real-world public policy decisions as robots become increasingly integrated into society.
Researchers have developed a synthetic DNA-encoded monoclonal antibody that rapidly protects mice and non-human primates from Zika infection. The DMAb-ZK190 platform has shown promise in controlling infection and reducing viral loads, providing a potential alternative to existing prevention methods.
Researchers have uncovered an ancient four-legged whale named Peregocetus pacificus, dated to 42.6 million years ago, with a mix of terrestrial and aquatic adaptations. The discovery supports the hypothesis that early cetaceans migrated from Africa to South America across the South Atlantic.
Scientists found that certain antibiotics trigger the generation of toxic molecules called reactive oxygen species (ROS), which can lead to new mutations and antibiotic resistance. ROS-reducing drugs like edaravone can prevent these mutations, suggesting a potential new strategy to combat resistance evolution
A review explores how two cell populations respond to organ failure, with one type relying on endoreplication and the other on cell regeneration. This cooperative response allows organs to recover from failure, but also presents tradeoffs that can impact long-term health.
A team of researchers has shown that a single population of stem cells in mice generates new neurons throughout their lifetime, contributing to embryonic, early postnatal, and adult neurogenesis in the hippocampus. This finding suggests that the brain has the capacity for continuous improvement and adaptation.
Mosquitoes use an olfactory coreceptor called Ir8a to detect acidic volatiles found in human sweat, which is necessary for their host detection system. The study suggests new approaches for designing improved mosquito repellents and potentially even a life-saving perfume.
Scientists have developed a method to print electronic fibers onto fabrics using a 3D printer. The technique allows for the creation of flexible, wearable hybrid materials with unprecedented properties, enabling the integration of functions such as sensing and actuating into smart wearable systems.
A study found that a hallucinogenic drug reduces signaling in the visual cortex, leading to altered timing of neuron firing and triggering visual hallucinations. The research has implications for understanding neurological underpinnings in disorders like schizophrenia.
The bias in human genomics research limits understanding of health and disease, and the ability to make accurate predictions and develop new treatments. The authors call for increased diversity in studies to address health inequalities and mistrust
Scientists in China have developed a process to convert plant waste into high-density aviation fuel, reducing CO2 emissions from airplanes. The biofuel has higher density than conventional fuels, allowing aircraft to fly farther and carry more.
A common cause for both Sudden Infant Death Syndrome (SIDS) and Sudden Unexpected Death in Epilepsy (SUDEP) may be an inability to wake up due to a faulty CO2 blood level regulation. A potential explanation is a malfunctioning serotonin receptor in the midbrain, which could drive future treatments.
Researchers have developed a more precise gene-editing technique to reduce DNA breaks and prevent cancer in stem cells. This breakthrough could improve the safety of CRISPR treatments for inherited blood disorders.
A recent study using camera traps in African forests found that wild apes exhibit varied reactions to unfamiliar objects, including poking, staring, and attempting to bite cameras. The study highlights the need for scientists to consider how animals will respond to monitoring equipment in their natural habitats.
The study sheds light on the genetic legacy of European hunter-gatherers, showing a complex and diverse ancestry in southern Europe. The findings suggest that hunter-gatherer lineages survived in Iberia during the Last Glacial Maximum and later intermingled with Neolithic farmers.
Researcher Alex de Vries finds Bitcoin mining mechanism cannot be powered solely by renewable energy, citing variable hydroelectric production and significant electronic waste generation. Alternative 'proof-of-stake' mechanisms could reduce energy consumption by 99.99% and eliminate e-waste.
Scientists found that Europe's renewable-based electricity system will perform similarly in future climates due to its ability to withstand extreme weather events. The grid may require tweaks for efficient operation, but its overall functionality is expected to remain intact.
Researchers found that a vegan-based fasting diet reduced inflammatory bowel disease (IBD) pathology in mice by changing their gut microbiota. The diet, known as the fasting-mimicking diet (FMD), increased stem cell numbers and stimulated protective gut microbiota, leading to reduced intestinal inflammation.
Researchers discover Malassezia yeasts in gut of patients with Crohn's disease, exacerbating intestinal inflammation. Genetic variation associated with immune response to fungi links to disease progression.
Scientists have discovered that electrical activity is the first known step in planarian flatworm regeneration, starting before genetic machinery kicks in. This breakthrough enables cells to communicate and make decisions about their position and overall organ structure.
Researchers found that nicotine disrupts cell-to-cell communication, decreases cell survival and alters gene expression in human embryonic stem cells. This study offers new insights into the effects of nicotine on individual organs and cells within the developing fetus.
Scientists have developed a nanotechnology that enables mice to see infrared light, opening the door for potential applications in civilian encryption, security, and military operations. The technology involves injecting nanoparticles into the mouse's eyes, which capture infrared wavelengths and emit shorter visible light wavelengths.
Researchers found that weekend recovery sleep does not reverse sleep loss-induced disruptions of metabolism. Insufficient sleep still leads to increased snacking, weight gain, and decreased insulin sensitivity, even after a weekend of extra sleep.
Researchers at NREL create a recycling process that upcycles PET plastic into high-value composite materials, reducing energy consumption by 57% and greenhouse gas emissions by 40%. The new material combines reclaimed PET with bio-based molecules to produce fiber-reinforced plastics.
Researchers discovered that paper mulberry tree evolved complex flavonoids to attract nitrogen-fixing bacteria, promoting healthy growth. This symbiosis has led to the development of high-quality feedstock, medicine, and food products.
Research suggests a reciprocal relationship between obesity and self-control, with reduced prefrontal cortex activity leading to overeating and weight gain. Exercise and mindfulness can improve prefrontal cortex activity, promoting better dietary choices.
The elderly are more susceptible to the flu due to a lack of antibody diversity, which reduces their ability to adapt to new viral strains. Antibodies from elderly individuals target only conserved proteins and structures, making it harder for them to protect against evolving viral strains.
Researchers found that acacia ants can sense vibrations caused by mammalian browsers and respond accordingly. The ants patrol the branches more actively when they detect these vibrations, allowing them to navigate towards the source of the threat and defend their tree.
A large-scale analysis found that indirect breastfeeding via pumping is associated with a higher abundance of potential pathogens and lower oral bacteria compared to direct breastfeeding. This could increase the risk of respiratory infections in infants, particularly those fed pumped milk.
Researchers have successfully generated functional, transplantable B cells from mice using mouse embryonic stem cells. The study demonstrates that these cells can secrete natural antibodies and maintain themselves for over six months after transplantation.
Researchers identified compounds that can reduce mosquito hunger for blood, acting on hormone pathways. The study used Aedes aegypti mosquitoes and found a drug capable of inhibiting biting and feeding behaviors.
Recent studies lending support to the 'grandmother hypothesis' suggest that post-reproductive lifespan is linked to grandmotherly help, which declines with age. The research found that maternal grandmothers aged 50-75 increased grandchild survival, but paternal grandparents over 75 had a detrimental effect.
Scientists at the Institute of Process Engineering and Yangzhou University developed a green water-purification system that purifies pathogen-rich water in 30 minutes, killing over 99.9999% of bacteria like E. coli. The system uses graphitic carbon nitride sheets and does not leave behind secondary pollution or heavy-metal-ion residues.
Researchers found that bariatric surgery triggers the release of higher levels of gut hormones, particularly GLP-1, leading to increased insulin production and improved glucose control. The study suggests a new mechanism for weight loss and diabetes management after surgery.
New evidence from stable isotopes in ancient panda bones indicates they likely had a varied diet, similar to that of other mammalian species. The researchers found that ancient pandas were isotopically distinct from modern giant pandas, suggesting differences in their dietary habits and a wider niche than previously thought.
Researchers at Oak Ridge National Laboratory have developed a process to scrub CO2 from coal-burning power plant emissions using an organic sorbent similar to soda lime. This alternative technology requires 24% less energy and can be regenerated at lower temperatures, making it more cost-effective for carbon capture.
University of British Columbia professor Jason Snyder reviews the conflicting reports on adult neurogenesis in humans, pointing to methodological differences as a major issue. He argues that there is evidence for low rates of neurogenesis in specific brain regions, particularly the hippocampus.
Two studies, one in young adults and the other in mice, found that rocking during sleep leads to better sleep quality, faster falling asleep, and improved memory consolidation. The researchers discovered that rhythmic stimulation of the vestibular system plays a key role in this phenomenon.
Researchers warn that China's Belt and Road Initiative (BRI) threatens native species and biodiversity due to high-risk introduction hotspots along proposed Economic Corridors. The team recommends early prevention, strict surveillance, rapid response, and effective control measures to mitigate the risk of biological invasions.
Researchers in Poland and South Korea have developed a computer program that suggests synthetic strategies to circumvent patent-protected aspects of essential drugs. The software, called Chematica, uses mechanistic rules to identify new retrosynthetic pathways, allowing for the generation of alternative yet economical starting materials.
Researchers have created mice with unusually short and long tails through genetic engineering, revealing key roles for the Lin28 and Hox13 genes in regulating tail development. The study provides new insights into the complex mechanisms controlling tail formation and has potential implications for understanding developmental and pathol...
Research in mice reveals how fever boosts the ability of immune cells to reach infections by altering surface proteins. Fever-induced heat shock protein 90 (Hsp90) promotes lymphocyte adhesion and transmigration through α4 integrin activation.
Researchers successfully converted invasive breast cancer cells in mice into harmless fat cells using two FDA-approved drugs, suppressing tumor growth and metastasis. This breakthrough could potentially deplete a tumor's ability to fight off conventional chemotherapy.
Researchers found that climate change has led to increased synchrony between the two species, resulting in more conflicts over nesting sites. As a result, pied flycatcher fatalities in great tit nests have risen dramatically.
Researchers found defective astrocytes cause accumulation of toxic alpha-synuclein, leading to neuronal death and degeneration. Healthy astrocytes protect neurons from cell death through restored cellular degradation processes.